Unit test for Util.insertOrUdpate()

vlc-android/test/org/videolan/vlc/util/UtilTest.java

+package org.videolan.vlc.util;
+
+
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class UtilTest {
+
+    @Test
+    public void testInsertOrUdpate() {
+        String a = "a";
+        String b = "b";
+        String c = "c";
+        String b2 = new String(b);
+        List<String> list = new ArrayList<>();
+        list.add(a);
+        list.add(b);
+        String[] items = {c, b2 };
+        Util.insertOrUdpate(list, items);
+        assertEquals(list.get(1), b2);
+        assertEquals(b, b2);
+        assertEquals(true, list.get(1) == b2);
+        assertEquals(list.get(2), c);
+    }
+}